diff options
Diffstat (limited to 'external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/ip.cpp')
| -rw-r--r-- | external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/ip.cpp | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/ip.cpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/ip.cpp new file mode 100644 index 00000000..d17f19c9 --- /dev/null +++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/ip.cpp @@ -0,0 +1,176 @@ +/* + Copyright (c) 2007-2015 Contributors as noted in the AUTHORS file + + This file is part of libzmq, the ZeroMQ core engine in C++. + + libzmq is free software; you can redistribute it and/or modify it under + the terms of the GNU Lesser General Public License (LGPL) as published + by the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + As a special exception, the Contributors give you permission to link + this library with independent modules to produce an executable, + regardless of the license terms of these independent modules, and to + copy and distribute the resulting executable under terms of your choice, + provided that you also meet, for each linked independent module, the + terms and conditions of the license of that module. An independent + module is a module which is not derived from or based on this library. + If you modify this library, you must extend this exception to your + version of the library. + + libzmq is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public + License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include "ip.hpp" +#include "err.hpp" +#include "platform.hpp" + +#if defined ZMQ_HAVE_WINDOWS +#include "windows.hpp" +#else +#include <fcntl.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <netdb.h> +#include <netinet/in.h> +#include <netinet/tcp.h> +#endif + +#if defined ZMQ_HAVE_OPENVMS +#include <ioctl.h> +#endif + +zmq::fd_t zmq::open_socket (int domain_, int type_, int protocol_) +{ + // Setting this option result in sane behaviour when exec() functions + // are used. Old sockets are closed and don't block TCP ports etc. +#if defined ZMQ_HAVE_SOCK_CLOEXEC + type_ |= SOCK_CLOEXEC; +#endif + + fd_t s = socket (domain_, type_, protocol_); +#ifdef ZMQ_HAVE_WINDOWS + if (s == INVALID_SOCKET) + return INVALID_SOCKET; +#else + if (s == -1) + return -1; +#endif + + // If there's no SOCK_CLOEXEC, let's try the second best option. Note that + // race condition can cause socket not to be closed (if fork happens + // between socket creation and this point). +#if !defined ZMQ_HAVE_SOCK_CLOEXEC && defined FD_CLOEXEC + int rc = fcntl (s, F_SETFD, FD_CLOEXEC); + errno_assert (rc != -1); +#endif + + // On Windows, preventing sockets to be inherited by child processes. +#if defined ZMQ_HAVE_WINDOWS && defined HANDLE_FLAG_INHERIT + BOOL brc = SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); + win_assert (brc); +#endif + + return s; +} + +void zmq::unblock_socket (fd_t s_) +{ +#if defined ZMQ_HAVE_WINDOWS + u_long nonblock = 1; + int rc = ioctlsocket (s_, FIONBIO, &nonblock); + wsa_assert (rc != SOCKET_ERROR); +#elif defined ZMQ_HAVE_OPENVMS + int nonblock = 1; + int rc = ioctl (s_, FIONBIO, &nonblock); + errno_assert (rc != -1); +#else + int flags = fcntl (s_, F_GETFL, 0); + if (flags == -1) + flags = 0; + int rc = fcntl (s_, F_SETFL, flags | O_NONBLOCK); + errno_assert (rc != -1); +#endif +} + +void zmq::enable_ipv4_mapping (fd_t s_) +{ + (void) s_; + +#ifdef IPV6_V6ONLY +#ifdef ZMQ_HAVE_WINDOWS + DWORD flag = 0; +#else + int flag = 0; +#endif + int rc = setsockopt (s_, IPPROTO_IPV6, IPV6_V6ONLY, (const char*) &flag, + sizeof (flag)); +#ifdef ZMQ_HAVE_WINDOWS + wsa_assert (rc != SOCKET_ERROR); +#else + errno_assert (rc == 0); +#endif +#endif +} + +int zmq::get_peer_ip_address (fd_t sockfd_, std::string &ip_addr_) +{ + int rc; + struct sockaddr_storage ss; + +#if defined ZMQ_HAVE_HPUX || defined ZMQ_HAVE_WINDOWS + int addrlen = static_cast <int> (sizeof ss); +#else + socklen_t addrlen = sizeof ss; +#endif + rc = getpeername (sockfd_, (struct sockaddr*) &ss, &addrlen); +#ifdef ZMQ_HAVE_WINDOWS + if (rc == SOCKET_ERROR) { + wsa_assert (WSAGetLastError () != WSANOTINITIALISED && + WSAGetLastError () != WSAEFAULT && + WSAGetLastError () != WSAEINPROGRESS && + WSAGetLastError () != WSAENOTSOCK); + return 0; + } +#else + if (rc == -1) { + errno_assert (errno != EBADF && + errno != EFAULT && + errno != ENOTSOCK); + return 0; + } +#endif + + char host [NI_MAXHOST]; + rc = getnameinfo ((struct sockaddr*) &ss, addrlen, host, sizeof host, + NULL, 0, NI_NUMERICHOST); + if (rc != 0) + return 0; + + ip_addr_ = host; + + union { + struct sockaddr sa; + struct sockaddr_storage sa_stor; + } u; + + u.sa_stor = ss; + return (int) u.sa.sa_family; +} + +void zmq::set_ip_type_of_service (fd_t s_, int iptos) +{ + int rc = setsockopt(s_, IPPROTO_IP, IP_TOS, reinterpret_cast<const char*>(&iptos), sizeof(iptos)); + +#ifdef ZMQ_HAVE_WINDOWS + wsa_assert (rc != SOCKET_ERROR); +#else + errno_assert (rc == 0); +#endif +} |